61125525 has 36 divisors (see below), whose sum is σ = 109956132. Its totient is φ = 32459520.

The previous prime is 61125511. The next prime is 61125563. The reversal of 61125525 is 52552116.

61125525 is a `hidden beast` number, since 611 + 25 + 5 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1542564 + 59582961 = 1242^2 + 7719^2 .

It is not a de Polignac number, because 61125525 - 2⁶ = 61125461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70897 + ... + 71753.

It is an arithmetic number, because the mean of its divisors is an integer number (3054337).

Almost surely, 2^61125525 is an apocalyptic number.

It is an amenable number.

61125525 is a deficient number, since it is larger than the sum of its proper divisors (48830607).

61125525 is a wasteful number, since it uses less digits than its factorization.

61125525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1182 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 61125525 is about 7818.2814607815. The cubic root of 61125525 is about 393.9195490526.

The spelling of 61125525 in words is "sixty-one million, one hundred twenty-five thousand, five hundred twenty-five".